词语bituminous coal
解释烟煤,肥煤
词性名词
bituminous coal沥清煤,烟煤详细»
bituminous coal〔名词〕烟煤详细»
bituminous coal沥青煤,烟煤详细»
bituminous coal〔名词〕沥青煤,烟煤详细»